1121539207 has 2 divisors, whose sum is σ = 1121539208. Its totient is φ = 1121539206.

The previous prime is 1121539189. The next prime is 1121539231. The reversal of 1121539207 is 7029351211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121539207 - 2¹¹ = 1121537159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121539007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560769603 + 560769604.

It is an arithmetic number, because the mean of its divisors is an integer number (560769604).

Almost surely, 2^1121539207 is an apocalyptic number.

1121539207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121539207 is an equidigital number, since it uses as much as digits as its factorization.

1121539207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1121539207 is about 33489.3894689049. The cubic root of 1121539207 is about 1038.9743361321.

The spelling of 1121539207 in words is "one billion, one hundred twenty-one million, five hundred thirty-nine thousand, two hundred seven".